The Cuelark Tools MCP server,
connected in one click.
Exact tools for agents: US tax, routing/EIN checks, business days, JSON, links, packages, citations. Connect the official Cuelark Tools MCP server to Claude, ChatGPT, or Cursor through gate — one gateway URL, no config files, security-checked.
Free to start · No credit card · No hosting needed
Add Cuelark Tools to your AI in one minute
Pick your client. Copy, paste, done — or let gate handle sign-ins and policies for you.
claude mcp add --transport http cuelark-tools https://tools.cuelark.com/mcpRun in your terminal, then restart Claude Code.
Cuelark Tools · https://tools.cuelark.com/mcp
What your AI can do with Cuelark Tools
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “json”: Validate and pretty-print or minify JSON (errors give line and column), or convert JSON to YAML or CSV, or CSV to JSON.”
“Use “text”: Exact text facts models get wrong: word/character/grapheme counts, whether text fits X, SMS, meta title/description or custom:N limits (with.”
“Use “dates”: Calendar math: days between dates, add days/weeks/months/years, exact age (with exam cut-offs), business days skipping public holidays (US f.”
“Use “time”: Current time anywhere (with DST state and next clock change), convert a wall-clock time between zones, or convert Unix timestamps to and fro.”
How secure is the Cuelark Tools MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how Cuelark Tools holds up.
Security grade A
gate scanned 15 tools on Nov 12, 2026 for prompt injection and risky tool definitions — nothing to flag.
Official endpoint
Operated by Cuelark Tools (cuelark.com) at its documented MCP endpoint — not a third-party mirror or community re-host.
No sign-in needed
This server only exposes public data — no account and no credentials are involved when you connect.
Scanned before it goes live
gate checks every tool for prompt injection, hidden instructions, data-exfiltration hints, and over-broad permissions before the server is available through your gateway.
Watched for drift
If Cuelark Tools adds or changes tools later, gate re-scans and alerts you — before your AI acts on the change.
Connected in three steps
Connect your gate
Add one gateway URL to Claude, ChatGPT, or any MCP client. One-time setup, about two minutes.
Pick Cuelark Tools
Choose Cuelark Tools in the gate directory. No sign-in needed.
Use it anywhere
Cuelark Tools's tools are live in every AI client you've connected — with rules and logging built in.
Free to start · No credit card · No hosting needed
The actual tools Cuelark Tools exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
json — Validate and pretty-print or minify JSON (errors give line and column), or convert JSON to YAML or CSV, or CSV to JSON.
text — Exact text facts models get wrong: word/character/grapheme counts, whether text fits X, SMS, meta title/description or custom:N limits (with
dates — Calendar math: days between dates, add days/weeks/months/years, exact age (with exam cut-offs), business days skipping public holidays (US f
time — Current time anywhere (with DST state and next clock change), convert a wall-clock time between zones, or convert Unix timestamps to and fro
encode — Base64 and URL encode/decode (UTF-8 safe), MD5/SHA-1/SHA-256/384/512 hashes, new UUID v4/v7 or ULID (or read a ULID's time), and decode a JW
convert — Unit conversion (imperial and metric: length, weight, volume, area, speed, temperature, data, pressure, energy), color hex/rgb/hsl, WCAG con
finance — Monthly loan payment (EMI) with a yearly amortization summary, simple and compound interest (with monthly contributions), percentage math (o
calculate — Exact decimal arithmetic for an expression (no floating-point drift: 0.1+0.2 = 0.3; + − × ÷ ^ %, sqrt, ln, log, round, min, max, pi), summar
+ 7 more tools once connected
Who runs the Cuelark Tools MCP server?
The Cuelark Tools MCP server at a glance
https://tools.cuelark.com/mcpQuestions, answered
Is there an official Cuelark Tools MCP server?
Yes — Cuelark Tools operates its own remote MCP server at tools.cuelark.com. gate connects you to that official endpoint and adds security scanning, per-tool access rules, and an activity log on top.
How do I connect Cuelark Tools to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick Cuelark Tools in the directory. No account or sign-in is needed. From then on, Cuelark Tools's tools are available in every client you've connected to gate.
Do I need to host anything?
No. Cuelark Tools runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the Cuelark Tools MCP server safe to connect?
It's the vendor's official endpoint, and gate scans its tools for prompt injection and hidden instructions before it goes live, re-checks it whenever it changes, and lets you allow, block, or require approval for every single tool.
Is it free?
Yes — you can get started with gate for free and connect Cuelark Tools in minutes. No credit card required.
Connect more than just Cuelark Tools
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up Cuelark Tools in: Claude · Claude Code · ChatGPT · Cursor · VS Code